Peroxidase and IAA-oxidase in crude and partially purified enzyme extracts of growing and differentiating root cells |
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Authors: | Dimitrina Klisurska Atanaska Dencheva |
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Institution: | (1) “M. Popov” Institute of Plant Physiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. Bl. 6, 1113 Sofia, Bulgaria |
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Abstract: | Crude enzyme extracts from the zones of division, elongation and differentiation of cells of primary maize (Zea mays) root show peroxidase activity but lack IAA-oxidase activity. After partial purification of the extracts by gel filtration
on Sephadex G-25, the specific peroxidase activity increases almost twice and a high IAA-oxidase activity appears.
The partial purification of the enzyme extracts does not change the electrophoretic pattern of the peroxidase isoenzymes,
but significantly improves the separation and the visualization of isoenzymes with IAA-oxidase activity.
The data obtained were interpreted in connection with the different modifying effect of the low molecular compounds (mainly
phenolics) on the activity and the isoenzyme patterns of the peroxidase and the IAA-oxidase. |
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